Specifications - Lord and Son Construction, Inc.

2.2.3 Connections and Terminations
Provide connectors for splicing conductors that conform to UL 96, class as
applicable. Conductor connections can be made by clamps or welds
(including exothermic). Provide style and size connectors required for the
installation.
2.2.4 Connector Fittings
Provide connector fittings for "end-to-end", "Tee", or "Y" splices that
conform to NFPA 780.
2.2.5 Lightning Protection Components
Provide bonding plates, air terminal supports, chimney bands, clips, and
fasteners that conform to UL 96 classes as applicable.
PART 3
EXECUTION
3.1 INTEGRAL SYSTEM
Lightning protection system consists of air terminals, roof conductors,
down conductors, ground connections, grounding electrodes and ground loop
conductor. Electrically interconnect lightning protection system to form
the shortest distance to ground. Do not use nonconducting parts of the
structure as part of the building's lightning protection system. Expose
conductors on the structures except where conductors are required to be in
protective sleeves. Interconnect secondary conductors with grounded
metallic parts within the building. Make interconnections within
side-flash distances at or above the level of the grounded metallic parts.
3.1.1 Air Terminals
Air terminal design and support conforming to NFPA 780. Rigidly connect
terminals to, and make electrically continuous with, roof conductors by
means of pressure connectors or crimped joints of T-shaped malleable
metal. Provide pressure connector or crimped joint with a dowel or
threaded fitting to connect ground rod conductor with air terminal. Set
air terminals at ends of structures not more than 2 feetfrom ends of ridges
and corners of roofs. Do not exceed 25 feet in spacing of 2 foot high air
terminals on ridges, parapets, and around perimeter of building with flat
roofs. When necessary to exceed this spacing, increase specified height of
air terminals not less than 2 inches for each one foot of increase over 25
feet. On large flat, or gently sloping roofs, as defined in NFPA 780,
place air terminals at points of the intersection of imaginary lines
dividing the surface into rectangles having sides not exceeding 50 feet in
length. Secure air terminals against overturning either by attachment to
the object to be protected or by means of a substantial tripod or other
braces which are permanently and rigidly attached to the building or
structure. Metal projections and metal parts of buildings such as
smokestacks and other metal objects that are at least 3/16 inch thick and
that do not contain hazardous materials, need not be provided with air
terminals. However, bond these metal objects to a lightning conductor
through a metal conductor of the same unit weight per length as the main
conductor. Where metal ventilators are installed, mount air terminals
thereon, where practical. Bond air terminals, erected by necessity
adjacent to a metal ventilator, to the ventilator near the top and bottom.
Where nonmetallic spires, steeples, or ventilators are present, mount air
terminals to the side. In addition, where spires or steeples project more
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